TN55TQX + TN53NQ2 network element —– TN53NQ2 + TN55TQX (B network element) networking, the network element is a synchronous system, 10GELAN MAC transparent mapping method, ALS function is enabled, and the connection service with the router is normal. At this time, change the 55TQX 10GELAN mode of the A network element to the BIT transparent mapping mode. What are the new alarms of the 53TQX network element A? (Multiple choice)
A . ODU2_LOFLOM
B . ALS_ACTIVE
C . REMOTE_FAULT
D . REM_SF
Answer: ABC